The document discusses various Visual Basic programming structures including declaring variables and constants, if/then statements, select case statements, goto statements, and subroutines. Key structures covered are declaring variables with Dim, constants with Const, if/then statements with single and multiple conditions, select case statements to evaluate expressions and ranges of values, and goto statements to transfer program control.

5.  Dim Var As Type
Dim name As String, age As Integer

6.  Const Const1 = Value
Const HighScore = 100

7. 

8.  Private Sub sub_name()
End Sub
Privete Sub Enter_Cmd()
Dim name As String
Const HighScore = 100
……
……
End Sub

9. .1
.2
.3

10. 
 Var = value
Dim name As String, grade As Single
name =
grade = 48.5

11.  IF condition THEN statements
IF grade >= 50 THEN Text1 = “ ”

12.  IF condition THEN
….
Statements
….
END IF
IF grade >= 60 THEN
Text1 = “ ”
Text2 = “ ”
END IF

13.  IF condition THEN
….
Statements1
….
ELSE
….
Statements2
….
END IF
IF grade >= 50 THEN
Text1 = “ ”
ELSE
Text1 = “ ”
END IF

14.  IF condition THEN
….
Statements1
….
ELSE IF condition THEN
….
Statements2
….
ELSE
….
END IF

15. IF grade >= 90THEN
Text1 = “ ”
ELSE IF grade >= 80THEN
Text1 = “ ”
ELSE IF grade >= 70THEN
Text1 = “ ”
ELSE IF grade >= 60THEN
Text1 = “ ”
ELSE
Text1 = “ ”
END IF

16. 
 GOTO line
Dim name As String, grade As Single
name =
GOTO AA:
…..
…..
AA:
grade = 48.5

17. 
 IF condition THEN GOTO line
IF grade >= 60 THEN GOTO A
IF grade < 60 THEN GOTO B
A:
Text1 = “ ”
GOTO C
B:
Text1 = “ ”
GOTO C
C:
Print Text1

18. 
GOTO 
GOTO

19. 
IF

SELECT CASE

20.  SELECT CASE expression
CASE prob1
....
statements1
….
CASE prob2
....
statements2
….
CASE ELSE
....
statements3
….
END SELECT

21.  SELECT CASE grade
CASE 90 to 100
Text1 = “ ”
CASE 80 t0 89
Text1 = “ ”
CASE 70 t0 79
Text1 = “ ”
CASE 60 t0 69
Text1 = “ ”
CASE ELSE
Text1 = “ ”
END SELECT